Final answer:
In a 12-lead ECG, lead aVR is placed on the right side and does not view a specific area of the heart, providing an inverted view useful for interpretation.
Step-by-step explanation:
When conducting a 12-lead electrocardiogram (ECG) on a patient, the lead that is located on the right side of the body and does not view a specific area of the heart is aVR (lead aVR). Each lead in an ECG measures the heart's electrical activity from different angles, and aVR primarily looks at the electrical activity from the right shoulder towards the center of the heart. Unlike other leads, aVR does not provide a view of a specific part of the heart's muscle but rather gives an inverted view which can be useful in interpreting the ECG.